1. If the tax elasticity of supply were zero, how high could the tax rate go before people reduced their work effort? How do families vary the quantity of labor supplied when tax rates change?
2. Is a tax deduction for tuition likely to increase college enrollments? How will it affect horizontal and vertical equities?
3. If U2's tax bill falls by $1 million when the band relo- cates to the Netherlands (World View, p. 411), who really pays for the band's charitable contributions?